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H .J. KERR STEAM BOILER Jan; 15 1924.

Filed Aug. 7, 19 22 A TTORNEYS.

Patented Jan. 15, 1924.

.UNITEDSTATESPATENT OFFICE.

HOWARD J. KERR, F BAYONNE, NEW JERSEY, ASSIGNOR TO THE BABCOGK 8:;WILCOX COlVIlANY, OF BAYONNE, NEW JERSEY, A. CORPORATION OF NEW STEAMBOILER.

Application filedv August 7, 1922. Serial No. 579,981.

To aZZ whom it may concern:

Be it known that I, Howano J. Kane, a citizen. of the United States,residing at Bayonne, in the county of Hudson and otate of, New Jersey,have invented a new and useful Improvement in Steam Boilers, of whichthe following is a specification.

My invention relates to steam boilers, and particularly to means bywhich a seal maybe established between a furnace wall and the boilerparts to prevent the escape of gases from the furnace. The inventionwill be best understood. from the following description and the annexeddrawing, in which, Figure 1 is a section througl'i the lower part of thedown-take headers of a horizontally inclined water. tube boiler, which Ihave adopted for purposes of illustration;Fig. 2 is a section online2-.-2 ofFig. 1, and Fig. 3 is a view from theleft. of Fig. 1, with someof theparts removed or broken away.

Like reference characters indicate. likie parts in the several views.

Referring, now, to the illustrative form of my invention, the downtakeheaders 10, into which extend the water tubes 11, are provided with amuddrum 12 extending below the lower endsthereof, the mud drum beingconnected to each of the headers so by a nipple 13, in the usual.manner.

Between the furnace chamber and the lower ends of the headers 10, wellas the mud drum 12, is the upper portion of a furnace wall 14; which. inthe form illustrated, extends up to the tubes 11. Beneath the mud drum1.2 is a water trough 15 connected to and supported by the boiler casing1.6.

Between the walll i and the boiler parts is a plurality of sealingplates 17, each of which, in the illustrative form, has an inwardlyturned edge 18 in contact with the headers 10 and .formlng a closedjoint therewith. The lower portion of the plates 17 is provided with arecessed end 19 which. can tends over one. of the walls of the watertrough 15..

In the illustrative form, the plates 17 are i with their ends extendingthrough slotted holes 2]. in the plates 17, and having nuts to draw andhold the plates 17 againstthe boiler parts.

The wall 1 1 is provided with a course of tile 22 arranged to form aT-shaped slot between them, each slot receiving a T-shaped projection 23connected to a plate 17, as shown best in Fig. 2. The slots in the tile22 and the T-shaped projections 23 are arranged so that the tile and theplate 17 may be moved relatively in a vertical direction, while, at thesame time, relative motion in a horizontal direction is prevented.

In the arrangement shown, plates 17 through this contact with theheaders 10 and with the wall 1 1, form a seal between the boiler partsand the wall to prevent leakage of gases from the furnace chamber andthe tube spaces into the space outside of the headers and the wall, andby reason of the connection of the plates 17 with the boiler parts andwith the wall, this seal is main tained, irrespective of the relativemotion between the boiler parts and the wall. For instance, if theboiler parts should rise vertically, then, by reason of the slots 21 andthe T-shaped connections with the course of tile 22, this motion will bepermitted without disturbing the sealing relations of the plates withthe boiler parts and the wall. The same is true of the relation betweenthe lower ends of the plates and the water trough 15. At the same time,by reason. of the connection of the tiles 22 with the plates 17, the.wall 141 is maintained in a vertical relation, by reason of theconnection of these plates 17 to the boiler parts themselves. In otherwords, any motion horizontally of the boiler parts or of the wall willcarry the other element with it, so that the horizontal relation.between the two is maintained at all times.

While I have shown my invention in connection with a boiler havingindivdual headers 10, it will be understood that it may also be appliedin a similar manner to a boiler having a continuous water chamber, andin the appended olaimswhere I have used the term water chamber, it willbe understood to mean either a single water chamber or one made up of aplurality'of individual headers, as in the illustrative embodiinent.While I have shown my arrange ment in connection with the down-take orad headers, it will be understood that asiniilar arrangement may beprovided beneath the uptake headers with a horizontally inclined watertube boiler.

. It will also be understood that certain features of my invention maybe used independently of other features.

I claim:

1. In a steam boiler a water chamber, a

' wall extending upwar ily between the water chamber and the boilerfurnace, a plate connectedto the wall and having a sliding contactwiththe water cl'iamber, and a connection between the plate and thewater chamber arranged to prevent relative horizontal motion and topermit relative vertical motion between the plate and the water chamber.

2. In a steam boiler, a water chamber, a wall extending upwardly betweenthe water chamber and the boiler furnace, a plate connected to the walland having a sliding contact with th water chamber, and a connectionbetween the plate and the water chamber arranged to prevent relativehorizontal motion and to permit relative vertical moion between theplate and the water cham her, said plate having a projection extendinginto the wall and the projection and the wall being connected to permitrelative vertical motion and to prevent relative horizontal motionbetween the plate and the wall.

8. In a steam boiler, a water chamber, a wall extending upwardlybet-ween the water chamber and the boiler furnace, a plate connected tothe wall and having a sliding contact with the water chamber, and a conneotion between the plate and the water chamber arranged to preventrelative horizontal motion and to permit relative vertical motionbetween the plate and the water chamber, a water trough beneath thewater chamber and supported on the boiler casing independently of thewall, said plate havinga sliding contact at its lower end with the watertrough.

4. In a boiler havingliorizontally inclined tubes connected o headers, amud drum beneath the headers and connected thereto, a wall extendingupwardly between the boiler furnace and the mud drum, a plate betweenthe wall and the'mud drum and connected to the wall and having a slidingcontact with the headers, and connections between the plate and thewater chamber and. mud drum arranged to permit relative vertical motiona d t prevent relative horizontal motion betweenv the headers and theplate.

5. In a boiler having horizontally inclined tubes connected to headers,a mud drum beneath the headers and connected thereto, a

wall ext-ending upwardly between the boiler furnace and the mud drum,plate between the wall and the mud drum and connected to thewall andhaving a sliding contactwith the headers, and connections between theplate and the water chambers and mud drum arranged to permit relativevertical motion and to prevent relative horizontal motion between theheaders and the plate, said plate having a projection extending into thewall. and arranged to permit relative vertical motion and to preventhorizontal motion between the wall and the plate.

6. In a boiler having horizontally in clined tubes connected to headers,a mud drum beneath the headers and connected thereto, a wall extendingupwardly between the boiler furnace and the mud drum, a plate betweenthe wall and the mud drum and connected to the wall and having a slidingcontact with the headers, connections between the plate and the waterchamber and mud drum arranged to permit relative vertical motion. and toprevent relative horizontal motion between the headers and the plate,and a water trough, beneath the mud drum supported on the boiler casingindependently of the wall, said plate having a sliding contact at itslower end withv the water trough.

'Z. In a steam boiler, a water chamber, a wall extending upwardlybetween the water chamber and. the boiler furnace, a plurality of platesextending, edge to edge across the boiler between thewall and. the waterchamber, each plate being connected. to the wall and having asliding-contact with the water chamber, and a connection between thewater chamber and the plate arranged to prevent relative horizontalmotion and to permit relative vertical motion between the plate and. thewater chamber.

8. In a steam boiler, a water chamber, a wall extending upwardly betweenthe water chamber and the boiler furnace, a plurality of platesextending edge to edge across the boiler between the wall and the waterchamber, each: plate being connected to the wall and having a slidingcontact with the water chamber, and a connection between the waterchamber and the plate arranged. to prevent relative horizontal motionand to permit relative verticalmotion between the plate and the waterchamber, each plate having a projection extending into the wall andarranged to prevent relative horizontal motion and to permit relativevertical motion between the plate and thewall.

9. In a boiler having horizontally in clined tubes connected to headers,a mud drum beneath. the headers and connected thereto by nipples, awall. extending lmtweon the boiler furnace and the mud. drum, aplurality of plates, extending edge to edge acrossthe boiler andconnected to the wall, each plate having a sliding contact with theheaders, and looped members extending through vertical. slots in. theplate and around the nipples. andconnected to the plates to hold theplates in contact with the headers.

10. In a boiler having horizontally in clined tubes connected toheaders, a mud drum beneath the headers and connected thereto bynipples, awall extending between the boiler furnace and the mud drum, aplurality of plates extending edge to edge across the boiler andconnected to the Wall, each plate having a sliding contact with theheaders, and looped meinlbers extending through Verticalslots in theplate and around the nipples and connected to the plates to hold theplates in contact With the headers, said plates having projectionsextending into the wall 'and arranged to permit relative vertical motionand to prevent relative horizontal mot-ion between the plates and theWall.

11. In boiler having horizontally indrum beneath the headers andconnected thereto by nipples, a Wall extending between the boilerfurnace and the mud drum, a plurality of plates extending edge to edgeacross the boiler and connected to the Wall, each plate having a slidingcontact with the headers, looped members extending through verticalslots in'the plate and around the nipples and connected to the plates tohold the plates in contact with the headers, said plates havingprojections extending into the Wall and arranged to permit relativevertical motion and to prevent relative horizontal motion between theplates and the Wall, and a Water trough beneath the mud drum andsupported independently of the boiler and the Wall and having a slidingcontact with the lower edges or said plates.

HOWARD J. KERR.

